Sandblasting is an industrial technique of surface cleaning using an abrasive projected at high speed by means of compressed air through a nozzle to the material to be stripped.
Sandblasting is used in many industries; it is also a facelift technique
Blasting Effects
The high speed sandblasting on a surface has several effects:
he scours, deoxidizes, removes a fragile surface layer (painting for example);
it creates a roughness that facilitates the grip of a coating, or gives the appearance to a mold for plastic parts, it is a good preparation before painting.
it dépolit, including glass, look "frosted glass".
Used for etching (serial numbers on car windows, names on tombstones).
When the abrasive is round, like glass beads, we obtain a satin effect. Used as a coating for steel and aluminum welding. It was then called peening.
At high power impacts cause a plastic deformation and therefore alter the surface (hardening, creating compressive stresses, shot penning);
A low power with abrasive scrub can be cleaned without damaging the substrate. (eg removing paint a window without dulling or scratching.)
the material
The treatment of small and medium sized parts can be handle cabin, this solution allows to comfortably work by confining the machine and the abrasive dust generated. The cabin can be equipped with a recycling facility and cleaning the abrasive continuously. The sand may be provided with conveyor belts or equipped for processing automatic parts.
The treatment of large parts is free jet, the sander while wearing a protective suit and helmet ventilated to protect it from dust generated.
There are many abrasive blasting technology:
The system depression, simple and economical, venturi, compressed air, integrated gun sucks the abrasive from the tank.
The system in overpressure, more productive, is to air pressurizing a container in which is stored the abrasive, it is then expelled via a hose and a nozzle.
Sandblasting requires compressed air thus a compressor
